[Blackfin] arch: Functional power management support: Add CPU and platform voltage scaling support

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/blackfin/mach-bf537/boards/stamp.c b/arch/blackfin/mach-bf537/boards/stamp.c
index d3727b7c2d7d..9a756d1f3d73 100644
--- a/arch/blackfin/mach-bf537/boards/stamp.c
+++ b/arch/blackfin/mach-bf537/boards/stamp.c
@@ -47,6 +47,7 @@
 #include <asm/bfin5xx_spi.h>
 #include <asm/reboot.h>
 #include <asm/portmux.h>
+#include <asm/dpmc.h>
 #include <linux/spi/ad7877.h>
 
 /*
@@ -817,7 +818,37 @@ static struct platform_device bfin_pata_device = {
 };
 #endif
 
+static const unsigned int cclk_vlev_datasheet[] =
+{
+        VRPAIR(VLEV_085, 250000000),
+        VRPAIR(VLEV_090, 376000000),
+        VRPAIR(VLEV_095, 426000000),
+        VRPAIR(VLEV_100, 426000000),
+        VRPAIR(VLEV_105, 476000000),
+        VRPAIR(VLEV_110, 476000000),
+        VRPAIR(VLEV_115, 476000000),
+        VRPAIR(VLEV_120, 500000000),
+        VRPAIR(VLEV_125, 533000000),
+        VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+        .tuple_tab = cclk_vlev_datasheet,
+        .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+        .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+        .name = "bfin dpmc",
+        .dev = {
+                .platform_data = &bfin_dmpc_vreg_data,
+        },
+};
+
 static struct platform_device *stamp_devices[] __initdata = {
+
+        &bfin_dpmc,
+
 #if defined(CONFIG_BFIN_CFPCMCIA) || defined(CONFIG_BFIN_CFPCMCIA_MODULE)
         &bfin_pcmcia_cf_device,
 #endif